Sewing machine



SEWING IACHINE Filed oct. 21. 192s fwuenfor Fe//X More# tented .uly 219, 93

UNITED STATES FELIX MOREL, or FAYETTAS, DORDOGNE, FRANCE, llissIcfNoR` To ANCIENS ETABLISSE- PATENT omer MENTS E. coRNELY `& CIE. (socIE'rEANoNYME), 0E PARIS, FRANCE SEWING MACHINE Application led October 21, 1,926, Serial No. 143,261, and in France January 28,1926.

It is an observed fact that inthe known machines forembroidering, sewing and openwork stitching, of the crank type, the presser foot which draws forward the textile fabric is rigidly secured to a feed bar by reason of theVwell-known functioning of the head plate, is caused to oscillate upon two horizontal axes perpendicular to one another, and is also given a vertical reciprocating motion, during which it is guided by a feed bar bearing which is slidable on a vertical tube. To provide for the oscillation of the said bar upon these two rectangular horizontal axes, the said feed bar bearing must be given a special form.

Inmy prior patent application, Serial No. 123,758, filed July 20th, 1926, I described in detail the disadvantages inherent in the use of such machines which are provided with feed bar bearings having the shape of a double funnel, i. e., the rapid wear of the said bearing andthe irregularity of the stitching,

and I described a guiding arangement byV which all such inconvenience is obviated. But this construction is only applicable with facility to machines of a relatively large output,

that is to say, having a considerable size.

The present invention has for its object to obviate the aforesaid disadvantages by other means.

The following description, with reference to the appended drawings which are given by way of example, sets forth the manner in which the said invention may be carried into effect.

Fig. I is an elevational view of Inyimproved feed bar carrier. Figs. 2 and 3 are corresponding end and plan views, respectively. Fig. l is an end view of a detail, and Fig. 5 is the corresponding plan view. Fig. 6 is an elevational view of a modified construction, and Figs; 7 and 8 are corresponding views, respectively in end elevation and in plan. Figs. 9 and l0 are respectively an elevational and a plan view of a detail of construction.

In the first embodiment of the invention, the feed bar carrier C is pierced with two smooth apertures in which are engaged the respective screws W W which are terminated and the two flatfaces `drical shape of the two faces ff `o by two smooth cylindrical portions and serve tofsupport'the feed bar A, whereby it is enabled to pivot on the axis X-#X. y

The said feed bar carrier C is further supported by a journal D in which the cylindrical shaft Iof the said feed bar carrier is rotatable. The bearing D is rigidly secured to the slide of the presser foot, which is vertically movable, said slide not lbeing shown in the drawings. v y

Within the feed bar carrier C `is mounted a collar E which is shown in Figs. Lfand 5 in endlelevation and in plan view. The two faces ff of the saidcollar are cylindrical g g carry the cylindrical trunnions e c. Y

The collar E is pierced with an aperture of such size that itwill be slidable without play upon the guide tube B of the machine. By reason of the `shape of the collar E, the feed barcarrier C is made in two parts, for milling" purposes, and the end-plate C is secured thereto by means of the screws Vi V2 V3 Vi. i

The collar E plays the part of a rigidshaft for the whole arrangement, since it is mount` ed without play upon the Y tube B, and it guides the feed bar carrier C which is maintained upon the axis Y-Y by the two trunnions e e', and also by reasonof the c lincollar E, so that the two axes Y-Y of each of these two members will coincide.

The `members E, C and C will thus have very simple geometrical forms, and 4may therefore be milled with great accuracy.'

.When the feed bar A oscillates on the axis p X--X, the screws W and W 4Will; `act as pivotsfor the oscillation; when the saidfeed barA oscillates on the axis Y--Y,' the feed bar carrier C Will rotate by its shaft I, in the journal D, and the members E and C will move relatively to one another, due to their cylindricalzsides and to the trunnions e and e (which latter would be sufficient).

It Will be thus `observed that by its present construction, the feed bar carrier C, While executing its movements of oscillation on X-X, Y-Y andyall other intermediate axes, cannot become displaced along the axis Y--Y or`X-X, and that the point O Will remain constantly on the axis Z-Z when by reason of the functioning of the machine the feed bar carrier vC is given a vertical reciprocating motion.

Vlith the present constructiom'the wear of the par-ts is a minimum, since the cylindrical sides of the members E and C can be given va large bearing surface.

Y In the second form vof construction, the feed bar carrier F is maintained -in the manner above described. The difference in the arrangement resides in the fact that the member iGr (substituted for the member E) 1 isa portion of a sphere which is pierced With an aperture of such size that it Will be slidable without -pflay upon the guide tube of the machine (not shownin Figs. 6, 7 and 8). The mem-berF is therefore made in two. parts f'or'miflling purposes, these parts being secured together by the screws U1 U2 US'Ul.

The` aforesaid arrangements are given solely by Way ofexampldand the forms, dimensi'ons fand detail dispositions may be modied in any suitable manner Without departing from the principle ofthe invention y as comprehended Within the-scope of the apf Van pended claims'.

What I claim is: y s

l. A feed bar bearing for sewing machines comprising, in combination, a feed barfcarrier, `means associated With said carrier for universally'supporting said feed bar, a vertically disposed rguide tube extending through said 'carrier, a guide collar slidably mounted on said tube Without play, and an articulation between said vcollar and said carrier.

2. A feed bar bearing/for sewing .maf

chines comprising, in combination, a feed bar carrier, means associated with said carrlier fo-r universally supporting'saidV feed bar, a vertically disposed guide tube extend-ing through said carrier, a :guide collar slidably mounted onsa'id tube 'Without play, randcomp lementary surfaces of a sol-id of revolution Y disposed onsaid collar and said carrier for permitting relative oscillatory displacement between said collar andsaid first-mentioned means.

` 3L A feed `'bar-'bearing for sewingrmachines comprising, in combination, a feed barv carrier, means associated with said carrier for universally supporting said feed bar, a vertically-disposed guide tube extending the coacting surfaces ad] acent said trunnions are flat. y y g In testimony whereof I have signed this specification. v

FLIX MOREL.

ISO 

